AN1105 datasheet(75/100 Pages) STMICROELECTRONICS

75 / 100 page

75/100

ST7 pCAN PERIPHERAL DRIVER

CAN_Overrun_Notification

CAN_General_Reception_Error_Notification

--------------------------------------------------------------------------*/

@interrupt @nostack void CAN_Interrupt(void)

{

IT_Type it_type;

it_type=CAN_Get_IT_Type();

switch(it_type)

{

case ITRECEPT :

{

CAN_Receive_Error error_status;

if (ValBit(CANISR,RXIF3)) //Check the lower priority buffer

first

{

status_counter=status_counter+1;

error_status=CAN_Receive(RECEPTION_3);

#ifdef DEBUG

CAN_Reception_Status(error_status);

#endif

status_counter=status_counter-1;

}

if(ValBit(CANISR,RXIF2)) //Then checks the other

{

status_counter=status_counter+1;

error_status=CAN_Receive(RECEPTION_2);

#ifdef DEBUG

CAN_Reception_Status(error_status);

#endif

status_counter=status_counter-1;

}

break;

}

case ITTRANSMIT :

//Transmission IT

{

CAN_Transmit_Error status;

Clr_TXIF_Bit();//Clearing the flag

status_counter=status_counter-1;

//Decrementing the

status counter

AN1105 Datasheet(PDF) 75 Page - STMicroelectronics

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